@m_svo @syntax Its reliability depends on its purpose, I have RPi with SD for 3.5 years and had no problems with it. PiHole doesn't need excessive write to disk (if you disable dns logs) so it should be reliable for PiHole purpose. As for Nextcloud you definitely need some SSD for read/write speeds, I think that RPi4 can manage Nextcloud pretty well, I'm yet to try it when I get one.